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Serving Kent, Issaquah, and surrounding areas

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Kent,WA – (253) 343-0000 | Issaquah, WA – (425) 472-(HVAC) 4822

Here’s a list of a few issues that indoor air quality can potentially create in your HVAC system.

Excessive dust in the ductwork, will end up in the HVAC equipment.

Here are some of the potential issues from dust accumulation.

High humidity.
Poor ventilation can lead to mold and bacteria growth.

Dirty Filters.
Dust and debris can build up in your systems, this reduces efficiency. This allows dust, pollen and other allergens to flow throughout the living or working space.

Dirty indoor coils in your HVAC system can introduce biological contaminants into your home.
These contaminants can foul the cooling coil and drain pans, which can spread contaminations through the ventilations system.


(Volatile Organic Compounds) In today’s new homes with tighter construction codes, the air inside the home can be more harmful than outside air.

Homes that are tightly sealed and insulate are more energy efficient, but often rely solely on mechanical ventilation to improve indoor air quality, yet many homes were built without any mechanical way to bring fresh air into the home like a simple “fresh air intake that allows outside air to be introduced into the home in a controlled manner.

Ask us about IAQ products that can help the health of your home.

Indoor air quality services for clean, fresh air inside

Being a top heating Contractor for Kent and Issaquah customers means being full-service. We want you and your family to have access to the best quality in-home heating and cooling system, but not at the cost of quality air. We offer indoor air quality enhancement services because bad air may actually stem from fundamental HVAC maintenance issues. We’ll start by improving conditions with a heater or AC tune-up!

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There are multiple layers to improving air quality, so we’ll also check for air quality issues that could result from:

  • Moisture buildup, leading to mold growth
  • Dirty or clogged air filters
  • Pets in the home contributing to dander concerns
  • Lack of airflow or poor air circulation
  • Dirty ductwork

Most people know about dust mites and how they contribute to poor air quality, but did you know dust mite feces are the real culprit behind dirty indoor air? The average household has many negative factors causing poor air quality and a lack of airflow, but we’re here to help change that for you.

We’re Proud to Service Carrier Products

World Class Services draws heavily from a line of Carrier brand products. We are consistently impressed with the innovation, efficiency and longevity of a wide array of advanced, whole-home options. The Carrier Infinity air purifier utilizes Captures & Kills technology to render 99% of trapped airborne pathogens harmless, including bacteria and coronavirus. The Carrier steam humidifier turns water to steam by way of electrodes for a very natural generation and introduction of essential humidity.

Breathe with Confidence from the Comfort of Home

Consider an iWave-R Air Cleaner to incorporate an ionization process into the duct system and reduce bacteria, viruses, smoke odors and a long list of toxins. From innovative Aprilaire Air Purifiers and Steam Humidifiers to the Honeywell Electronic Air Cleaners, revolutionary Air Scrubber options and ACTIVE Particle Control Technology via Platinum PLUS Home Air Purification, World Class Services efficiently enhances the hygiene, health and enjoyment of homes throughout Kent, Des Moines, Renton, Federal Way, Burien, & Covington, WA. Reach out to us for professional services and Feel The Difference.

Indoor Air Quality Testing & Indoor Air Quality Kent, WA, Federal Way, WA, Renton, WA, Des Moines, WA, Burien, WA & Covington, WA

Indoor Air Quality Kent, WA & Indoor Air Quality Testing Federal Way, WA

Indoor Air Quality TestingIndoor Air Quality ∴ Kent, WA ∴ Des Moines, WA ∴ Covington, WA

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Residential & Commercial


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Residential & Commercial

Air Conditioning

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Residential & Commercial

Ductless HVAC

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Residential & Commercial


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Water Heaters

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Electrical Services


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Electrical Services

EV Charge Ports

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Electrical Services

Panel Changes

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Indoor Air Quality

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Duct Cleaning

Customer Reviews
What They're Saying
Cameron P.

The technician was very communicative, told me when he was going to arrive and diagnosed the issue quickly and efficiently. He was very respectable and clear and concise on what was needed and was more than happy to hire him for this repair. Too many times I am asked to fill out forms for a review but I was eager and happy to do so following my visit by the tech and he represented WCS very well.


Great customer service from both Cyndi and Devan since start to finish. I booked a furnace maintenance and Cyndi was responsive and eager to answer all of my questions. Devan was on time, professional and did a great job with the maintenance service. He was willing to answer all of my questions and was not afraid to share his knowledge, insights and expertise. It truly felt like he was here to help rather than trying to sell, which I really appreciated.

Joshua S.

While no one wants an unplanned HVAC issue, we were delighted with World Class Services! Devan was immensely helpful, and communicated each step between our first call and final resolution. I’ll be using him and his team again, and have even recommended World Class to some family and friends in the neighborhood!

Marie L.

World class definitely leaves up to their name, as they provide top notch world class service. They contact you at every process, great at communicating changes . Sending the picture of who is arriving was a great way to ease and feel safe. Devan was respectful of our home (wore booties without being asked), he was respectful of our time and was great at explaining what’s needed and not needed. I would highly recommend world class for heating and cooling needs.

Greg B.

I highly recommend World Class. Our gas furnace went out and they were able to schedule an appt for the same day. Devan was great and got us back up and running quickly at a fair cost without even needing to replace a part. I will definitely use them again for future furnace maintenance and repair.

Kelly C.

It was a joy to have Devan service our furnace. It was really cool to have him text confirm with his picture. His professional demeanor, accountability and communication was wonderful! It was also appreciated having pictures of our job and adequate description of what was done for our records… excellent! I can’t remember ever having that nice of a visit to provide a service. Looking forward to seeing him again for our next service needed.

Michael L.

Brandon come out to our place to clean out our dryer vent. He was great and did a fantastic job cleaning our vent, which has five elbow joints between the dryer and the outside. The louvers on the vent cap outside were barely moving before he came, but they were flapping wide open after he was done (see videos). My wife and I are very pleased with the work he did. We’ll be using World Class Services again!

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